Method for restoring degraded grassland ecosystem by establishing Leymus chinensis

A technology for Leymus chinensis and seeds, which is applied in the fields of botanical equipment and methods, land preparation methods, planting substrates, etc., can solve the problems of successful planting of Leymus chinensis natural grassland, low seed germination rate and low seedling survival rate, water shortage in stages, etc. To achieve the effect of reducing labor required for water and fertilizer management, reducing water evaporation, and increasing grassland biomass

Active Publication Date: 2019-09-06
INST OF BOTANY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional methods of no-tillage, supplementary sowing and aerial sowing can solve the problem of seed banks, due to factors such as unreasonable soil structure, nutrient deficiency and water shortage, the germination rate of seeds and the survival rate of seedlings using these methods are low. , it is difficult for Leymus chinensis to be successfully established in the severely degraded natural grassland

Method used

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  • Method for restoring degraded grassland ecosystem by establishing Leymus chinensis
  • Method for restoring degraded grassland ecosystem by establishing Leymus chinensis
  • Method for restoring degraded grassland ecosystem by establishing Leymus chinensis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 builds the method for planting Leymus chinensis

[0036] (1) Selection of planting points: According to the restoration plan, one planting point can be established every 10m×10m in the area to be restored;

[0037] (2) Preparation of nutrient soil: At the planting point, dig a round pit with a diameter of 30cm and a depth of 30cm, take 80-90% of the excavated soil, add 12g of slow-release urea, 2g of diammonium phosphate, and 500g of decomposed Cow dung or sheep dung, fully mixed and then backfilled into the pit;

[0038] (3) Preparation of cofferdam soil: take 10-20% of the excavated soil, add 100g of pregelatinized starch, fully mix and add appropriate amount of water to make mud;

[0039] (4) Seed preparation: Soak the collected Leymus chinensis seeds in 3% potassium permanganate aqueous solution for 10-15 minutes, scoop out the seeds, wash them three times with clean water, drain them until there are no obvious water drops, and place them in -15-18°C ...

Embodiment 2

[0043] Embodiment 2 Verification of the planting method of the present invention

[0044] In order to verify the beneficial effect of the planting method of the present invention, the inventor designed an orthogonal experiment with four factors and two levels, as shown in Table 1.

[0045] Table 1 Orthogonal experiment table

[0046]

[0047] Orthogonal experiment results are shown in Table 2.

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Abstract

The invention discloses a method for restoring degraded grassland ecosystem by establishing Leymus chinensis and belongs to the field of ecological remediation. The method includes digging a round pitin an establishment site, taking 80-90% of excavated soil, adding slow-release urea, diammonium phosphate and decomposed animal waste, mixing well, and backfilling the round pit; covering the round pit with perforated degradable agricultural film, and planting pre-germinated seeds of Leymus chinensis in soil at perforated parts. The method helps prevent the problems that, for instance, shortage of moisture and nutrients causes low germination rate of Leymus chinensis seeds and low survival rate of seedlings; the method is applicable to the grassland ecosystems degraded, desertified and salinized due to various causes, and allows clonal propagation advantages of Leymus chinensis to be fully utilized so as to arrive at restoring a stretch of land by cultivating of a spot.

Description

technical field [0001] The invention belongs to the field of ecological restoration, and in particular relates to a method for restoring a degraded grassland ecosystem by planting Leymus chinensis. Background technique [0002] Restoration of constructive species is one of the main goals of restoration of degraded grassland ecosystems. However, the lack of seed bank and propagule bank of the founder species restricts the recovery of the founder species to a great extent. Leymus chinensis is the constructive species of typical steppe and meadow steppe. Although the traditional methods of no-tillage, supplementary sowing and aerial sowing can solve the problem of seed banks, due to factors such as unreasonable soil structure, nutrient deficiency and water shortage, the germination rate of seeds and the survival rate of seedlings using these methods are low. , it is difficult to allow Leymus chinensis to be successfully established in severely degraded natural grasslands. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G24/10A01G24/30A01G24/20A01G22/00A01B79/02
CPCA01G24/10A01G24/30A01G24/20A01G22/00A01B79/02
Inventor 闫彩凤陈全胜张亮盖晓东赛西雅拉图
Owner INST OF BOTANY CHINESE ACAD OF SCI
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